CVE-2020-12421

CVE-2020-12421 describes a flaw where add-on updates could reject certificate chains terminating in non-built-in roots, causing add-ons to appear out-of-date without user notification. Public advisories place affected products as Mozilla Firefox ESR (<68.10) and Firefox (<78) and Thunderbird (

CVE-2020-12421

When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected even if they were legitimately added by an administrator. This could have caused add-ons to become out-of-date silently without notification to the user. This vulnerability affects Firefox ESR 68.10...

CVE-2020-12421

When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected even if they were legitimately added by an administrator. This could have caused add-ons to become out-of-date silently without notification to the user. This vulnerability affects Firefox ESR 68.10...

Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : Thunderbird vulnerabilities (USN-4421-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4421-1 advisory. Multiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially crafted website in a...

firefox security update

CentOS Errata and Security Advisory CESA-2020:2824 An update for firefox is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity...

firefox security update

CentOS Errata and Security Advisory CESA-2020:2827 An update for firefox is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity...

USN-4421-1: Thunderbird vulnerabilities

Multiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, or execute arbtirary code. CVE-2020-12405,...

Man-in-the-Middle (MitM)

firefox is vulnerable to man-in-the-middle MitM. The vulnerability exists as the Add-On updates did not respect the same certificate trust rules as software updates...

Oracle Linux 7 : firefox (ELSA-2020-2827)

The remote Oracle Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2020-2827 advisory. 68.10.0-1.0.1 - Remove upstream references Orabug: 30143292 - Update distribution for Oracle Linux Orabug: 30143292 - Add firefox-oracle-default-prefs....

Scientific Linux Security Update : firefox on SL6.x i386/x86_64 (20200707)

Security Fixes : - Mozilla: Information disclosure due to manipulated URL object CVE-2020-12418 - Mozilla: Use-after-free in nsGlobalWindowInner CVE-2020-12419 - Mozilla: Use-After-Free when trying to connect to a STUN server CVE-2020-12420 - Mozilla: Add-On updates did not respect the same...

Oracle Linux 6 : firefox (ELSA-2020-2824)

The remote Oracle Linux 6 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2020-2824 advisory. 68.10.0-1.0.1 - fix LDLIBRARYPATH - Add firefox-oracle-default-prefs.js and remove the corresponding Red Hat one 68.10.0-1 - Update to 68.10.0 build1...

RHEL 8 : firefox (RHSA-2020:2825)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2020:2825 advisory. Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox...

RHEL 8 : firefox (RHSA-2020:2828)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2020:2828 advisory. Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox...

RHEL 8 : firefox (RHSA-2020:2826)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2020:2826 advisory. Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox...

Mozilla: Add-On updates did not respect the same certificate trust rules as software updates

The Mozilla Foundation Security Advisory describes this flaw as: When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected even if they were legitimately added by an administrator. This could have caused add-ons to become out-of-date silently without...

Important: Red Hat Security Advisory: firefox security update

An update for firefox is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...

Important: Red Hat Security Advisory: firefox security update

An update for firefox is now available for Red Hat Enterprise Linux 8.1 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

Mozilla: Add-On updates did not respect the same certificate trust rules as software updates

The Mozilla Foundation Security Advisory describes this flaw as: When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected even if they were legitimately added by an administrator. This could have caused add-ons to become out-of-date silently without...

Mozilla: Add-On updates did not respect the same certificate trust rules as software updates

The Mozilla Foundation Security Advisory describes this flaw as: When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected even if they were legitimately added by an administrator. This could have caused add-ons to become out-of-date silently without...

Important: Red Hat Security Advisory: firefox security update

An update for firefox is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...